Will not boot with two sticks mem. Only one

December 28, 2011 at 16:12:43
Specs: Windows Vista Home, AMD Sempron X2 2300
Acer Aspire X1200 bad memory socket?
Machine came to me unable to boot. Could hear harddrive spin up, but nothing on the screen. No beeps, no CMOS, nothing. I undid DVD, and removed modem card. Still nothing. I removed the stick of RAM furthest from MB and machine booted. I then swapped mem sticks and it booted again proving to me that the mem sticks were OK. Put both stick back in and no boot. Suspected bad memory socket on MB so bought new replacement board. Installed and it does the same thing. Scratching head, can anyone help?

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#1
December 28, 2011 at 16:39:09
While both sticks individually may be compatible with the machine, they may not be compatible with each other. You don't state what type/speed of RAM you're trying to get working....

"Channeling the spirit of jboy..."


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#2
December 28, 2011 at 16:46:36
Good point. Memory is the same sticks that were originaly installed. Each stick is a Samsung samsung 2gb 2rx8 pc2-5300s-555-12-e3
Should equate to a DDR2

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#3
December 28, 2011 at 16:56:28
OK, I made an asumption about the memory. One stick is what I posted above. The other is a 1GB 1rx8 pc2 6400u-666-13-D1.800 Made Nanya. Three GB total.

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#4
December 28, 2011 at 18:29:55
The memory is not only of different sizes, but also different speeds. This will sometimes work with the slower memory in the first slot, but not the faster memory in the first slot so try switching them. If that does not work then the timings on them are too different to work together, especially on that board. Either use the 2GB stick by itself, of purchase a stick that matches it. If your OS is 32bit, and you install 4GB of memory, it will only recognize a little over 3GB of it, but it will work, so if you get a good buy on a matching 2GB stick, buy it. If the memory is not the same brand and model, it needs to be the same speed and use the same timings (can be listed like: 6-6-6-18 or similar) to run well and is best if they are listed on your motherboard's RAM compatibility list (already tested to work with your board).

You have to be a little bit crazy to keep you from going insane.


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#5
December 28, 2011 at 19:45:37
Hey Fingers, I understand what your talking about, but perhaps I have not been clear. This is the setup that came from ACER. It has not been changed. This is the original working memory configuration that worked since the machine was purchased (problems started just out of warranty)
Either stick will work in the first slot by itself. Add either stick in the second slot and it will not boot or do anything. I have tried either stick by itself in the second slot (furthest from processor) and it will not boot. It all seemed to point to a bad socket on the MB, but with a new board the problem continues.
Can I assume that if the machine boots with either stick of memory by itself that the memory is good?
Is it possible that Vista or CMOS corrupted and can only read one slot on board? I have never come across that before.

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